Modal Shift to Rail: Shippers Flee Soaring Trucking Costs

Shippers are increasingly shifting freight from trucking to intermodal rail transportation as truckload costs rise dramatically across key domestic corridors. Intermodal domestic container volumes have grown 10% compared to 2025, while long-haul tender volumes (loads moving 800+ miles) have remained flat—an unusual pattern for August that signals deliberate mode substitution. The cost differential is driving this shift: trucking rates from Chicago to Elizabeth, New Jersey have surged 31% versus just 5% for intermodal in the same lane, while Atlanta-to-Elizabeth truckload rates have jumped nearly 60% against a 6% increase for intermodal.

This modal migration represents a structural response to unsustainable rate spreads rather than seasonal demand fluctuation. Chicago's domestic container volumes have grown 9% year-over-year compared to Los Angeles's 3%, while Atlanta has experienced over 20% growth, reflecting the geographic rebalancing of freight away from traditional West Coast port-to-truck flows. However, supply chain professionals should recognize this shift carries material risks: intermodal capacity is finite, drayage constraints mirror trucking limitations, and rate increases for intermodal carriers are inevitable as they capitalize on the opportunity.

The timing is particularly consequential as inventory levels remain historically tight and September-October peak season approaches. Shippers prioritizing cost optimization today may face service-level exposure if unexpected demand surges or if rail infrastructure reaches capacity constraints. The looming transcontinental rail merger decision adds another layer of uncertainty to intermodal rate stability.